Amad struck United's second goal to earn the point and had a winner denied after Murillo cleared his strike off the line.
Amorim enthused afterwards: "(It lifted) the team and our away fans, you can sense that if we have a little bit more time (we would have won). I think we should have played a little bit more time today. But we lost two points, let's move on to work on the different things we need to improve, but look to the good things we showed today.
"Amad has a lot of talent, he is growing up really fast. I think we have a lot of players that are young and talented but we need to help in all the details. He is improving a lot, he can play in different positions, I think he can be so much better. More consistent in every detail, when he receives the ball, in build-up, when he is in the final third.
"You could see in the first half he had some opportunities. In a lot of games, he has that opportunity coming inside and the shot is not there yet. We are working on that, so he has potential to do better."